Air quality measuring instrument



A description of the figure or each of the figures of the drawings is as follows: The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a front, top perspective view of a air quality measuring instrument embodying our new design;

FIG. 2 is a front, left, top perspective view thereof;

FIG. 3 is a front, right, top perspective thereof;

FIG. 4 is a right, rear, top perspective view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a front, left, top perspective view of FIG. 1 shown in a configuration of use;

FIG. 9 is a top, front, left perspective view of FIG. 8 ;

FIG. 10 is a front, left, top perspective view of FIG. 1 shown in a configuration of use;

FIG. 11 is a top, front, left perspective view of FIG. 10 ;

FIG. 12 is a front, left, top perspective view of FIG. 1 shown in a configuration of use;

FIG. 13 is a top, front, left perspective view of FIG. 12 ;

FIG. 14 is a front, left, top perspective view of FIG. 1 shown in a configuration of use; and,

FIG. 15 is a top, front, left perspective view of FIG. 14 . 

CLAIM We claim the ornamental design for a air quality measuring instrument, as shown and described. 